COVID-19, SARS-CoV-2, SARS-CoV-2 vaccine, MVC-COV1901, booster vaccination, SARS-CoV-2 Beta variant booster vaccine, Omicron variant
Enterovirus, Enterovirus vaccine, EV-A71, EV-A71 vaccine, hand, foot, and mouth disease, pediatrics, clinical trial, immune durability